<template>
  <div class="app-container">
    <div class="filter-container">
      <el-input
        v-model="listQuery.username"
        placeholder="Title"
        style="width: 200px;"
        class="filter-item"
        @keyup.enter.native="handleFilter"
      />

      <el-button v-waves class="filter-item" type="primary" icon="el-icon-search" @click="handleFilter">
        搜索
      </el-button>
      <el-button
        class="filter-item"
        style="margin-left: 10px;"
        type="primary"
        icon="el-icon-edit"
        @click="handleCreate"
      >
        新增
      </el-button>
      <el-button
        v-waves
        :loading="downloadLoading"
        class="filter-item"
        type="primary"
        icon="el-icon-download"
        @click="handleDownload"
      >
        导出
      </el-button>
      <el-checkbox v-model="showReviewer" class="filter-item" style="margin-left:15px;" @change="tableKey=tableKey+1">
        reviewer
      </el-checkbox>
    </div>

    <el-table
      :key="tableKey"
      v-loading="listLoading"
      :data="list"
      border
      fit
      highlight-current-row
      style="width: 100%;"
      @sort-change="sortChange"
    >

      <el-table-column
        label="ID"
        prop="id"
        sortable="custom"
        align="center"
        width="80"
        :class-name="getSortClass('id')"
      >
        <template slot-scope="{row}">
          <span>{{ row.id }}</span>
        </template>
      </el-table-column>
      <el-table-column label="用户名" width="150px" align="center">
        <template slot-scope="{row}">
          <span>{{ row.name }}</span>
        </template>
      </el-table-column>

      <el-table-column
        label="用户账号"
        prop="id"
        sortable="custom"
        align="center"
        width="80"
        :class-name="getSortClass('id')"
      >
        <template slot-scope="{row}">
          <span>{{ row.account }}</span>
        </template>
      </el-table-column>

      <el-table-column label="Actions" align="center" width="230" class-name="small-padding fixed-width">
        <template slot-scope="{row,$index}">
          <el-button type="primary" size="mini" @click="handleUpdate(row)">
            编辑
          </el-button>
          <el-button v-if="row.status!='deleted'" size="mini" type="danger" @click="handleDelete(row,$index)">
            删除
          </el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="listQuery.page"
      :limit.sync="listQuery.limit"
      @pagination="getList"
    />

    <el-dialog :title="textMap[dialogStatus]" :visible.sync="dialogFormVisible">
      <el-form
        ref="dataForm"
        :rules="rules"
        :model="temp"
        label-position="left"
        label-width="70px"
        style="width: 400px; margin-left:50px;"
      >
        <el-form-item label="用户名" prop="name">
          <el-input v-model="temp.name" />
        </el-form-item>
        <el-form-item label="账号" prop="account">
          <el-input v-model="temp.account" />
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="temp.password" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">
          Cancel
        </el-button>
        <el-button type="primary" @click="dialogStatus==='create'?createData():updateData()">
          Confirm
        </el-button>
      </div>
    </el-dialog>

    <el-dialog :visible.sync="dialogPvVisible" title="Reading statistics">
      <el-table :data="pvData" border fit highlight-current-row style="width: 100%">
        <el-table-column prop="key" label="Channel" />
        <el-table-column prop="pv" label="Pv" />
      </el-table>
      <span slot="footer" class="dialog-footer">
        <el-button type="primary" @click="dialogPvVisible = false">Confirm</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
import {
  fetchList,
  fetchPv,
  createUser,
  updateUser,
  deleteUser
} from '@/api/user'
import waves from '@/directive/waves' // waves directive
import {
  parseTime
} from '@/utils'
import Pagination from '@/components/Pagination' // secondary package based on el-pagination

const calendarTypeOptions = [{
  key: 'CN',
  display_name: 'China'
},
{
  key: 'US',
  display_name: 'USA'
},
{
  key: 'JP',
  display_name: 'Japan'
},
{
  key: 'EU',
  display_name: 'Eurozone'
}
]

// arr to obj, such as { CN : "China", US : "USA" }
const calendarTypeKeyValue = calendarTypeOptions.reduce((acc, cur) => {
  acc[cur.key] = cur.display_name
  return acc
}, {})

export default {
  name: 'ComplexTable',
  components: {
    Pagination
  },
  directives: {
    waves
  },
  filters: {
    statusFilter(status) {
      const statusMap = {
        published: 'success',
        draft: 'info',
        deleted: 'danger'
      }
      return statusMap[status]
    },
    typeFilter(type) {
      return calendarTypeKeyValue[type]
    }
  },
  data() {
    return {
      tableKey: 0,
      list: null,
      total: 0,
      listLoading: true,
      listQuery: {
        page: 1,
        limit: 20,
        title: undefined,
        sort: '+id'
      },
      importanceOptions: [1, 2, 3],
      calendarTypeOptions,
      sortOptions: [{
        label: 'ID Ascending',
        key: '+id'
      }, {
        label: 'ID Descending',
        key: '-id'
      }],
      showReviewer: false,
      temp: {
        userName: '',
        userAccount: '',
        userPassword: ''

      },
      dialogFormVisible: false,
      dialogStatus: '',
      textMap: {
        update: '修改',
        create: '添加'
      },
      dialogPvVisible: false,
      pvData: [],
      rules: {
        type: [{
          required: true,
          message: 'type is required',
          trigger: 'change'
        }],
        timestamp: [{
          type: 'date',
          required: true,
          message: 'timestamp is required',
          trigger: 'change'
        }],
        title: [{
          required: true,
          message: 'title is required',
          trigger: 'blur'
        }]
      },
      downloadLoading: false
    }
  },
  created() {
    this.getList()
  },
  methods: {
    getList() {
      this.listLoading = true
      fetchList(this.listQuery).then(response => {
        console.log(response.data)
        this.list = response.data.records
        this.total = parseInt(response.data.total)

        // Just to simulate the time of the request
        setTimeout(() => {
          this.listLoading = false
        }, 1.5 * 1000)
      })
    },
    handleFilter() {
      this.listQuery.page = 1
      this.getList()
    },
    handleModifyStatus(row, status) {
      this.$message({
        message: '操作Success',
        type: 'success'
      })
      row.status = status
    },
    sortChange(data) {
      const {
        prop,
        order
      } = data
      if (prop === 'id') {
        this.sortByID(order)
      }
    },
    sortByID(order) {
      if (order === 'ascending') {
        this.listQuery.sort = '+id'
      } else {
        this.listQuery.sort = '-id'
      }
      this.handleFilter()
    },
    resetTemp() {
      this.temp = {
        name: '',
        account: '',
        password: ''
      }
    },
    handleCreate() {
      this.resetTemp()
      this.dialogStatus = 'create'
      this.dialogFormVisible = true
      this.$nextTick(() => {
        this.$refs['dataForm'].clearValidate()
      })
    },
    createData() {
      this.$refs['dataForm'].validate((valid) => {
        if (valid) {
          console.log(this.temp)
          createUser(this.temp).then(() => {
            this.dialogFormVisible = false
            this.$notify({
              title: 'Success',
              message: '添加成功',
              type: 'success',
              duration: 2000
            })
            this.getList()
          })
        }
      })
    },
    handleUpdate(row) {
      this.temp = Object.assign({}, row) // copy obj
      console.log(this.temp)
      this.dialogStatus = 'update'
      this.dialogFormVisible = true
      this.$nextTick(() => {
        this.$refs['dataForm'].clearValidate()
      })
    },
    updateData() {
      this.$refs['dataForm'].validate((valid) => {
        if (valid) {
          const tempData = Object.assign({}, this.temp)
          updateUser(tempData).then(() => {
            this.dialogFormVisible = false
            this.$notify({
              title: 'Success',
              message: '更新成功',
              type: 'success',
              duration: 2000
            })
            this.getList()
          })
        }
      })
    },
    handleDelete(row, index) {
      deleteUser(row.id).then(() => {
        this.$notify({
          title: 'Success',
          message: '删除成功',
          type: 'success',
          duration: 2000
        })
        this.getList()
      })
    },
    handleFetchPv(pv) {
      fetchPv(pv).then(response => {
        this.pvData = response.data.pvData
        this.dialogPvVisible = true
      })
    },
    handleDownload() {
      this.downloadLoading = true
      import('@/vendor/Export2Excel').then(excel => {
        const tHeader = ['ID', '用户名', '账号']
        const filterVal = ['id', 'name', 'password']
        const data = this.formatJson(filterVal)
        excel.export_json_to_excel({
          header: tHeader,
          data,
          filename: '用户列表'
        })
        this.downloadLoading = false
      })
    },
    formatJson(filterVal) {
      return this.list.map(v => filterVal.map(j => {
        if (j === 'timestamp') {
          return parseTime(v[j])
        } else {
          return v[j]
        }
      }))
    },
    getSortClass: function(key) {
      const sort = this.listQuery.sort
      return sort === `+${key}` ? 'ascending' : 'descending'
    }
  }
}
</script>
